# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,330 questions, page 27
1. ## algebra

addition method:3x-5y=-2 and 5y-2x=-2 how would I solve it since they are not together?

asked by m on February 21, 2011
2. ## Maths

solve in simultaneous method a+2b=13 2a-3b=5

asked by Mercy on November 1, 2018
3. ## algebra

Solve using the elinination method 2x+2y=20 2x-2y=4

asked by mema on June 9, 2011

Solve x^3 -3x^2 +5x +4 = 0 using Tartaglia's method.

asked by josh on October 25, 2009
5. ## math

8m+n=12 m-5n=22 solve using substitution method

asked by Anonymous on June 30, 2010
6. ## college algebra

would this be foil method? If so how do I solve. x-1 x-5 = x+3 x+4

asked by dot on February 17, 2011
7. ## algebra

solve by the substitution method. 6x+3y=-21 -4x+y=41

asked by kim on February 24, 2012
8. ## substitution

solve by the substitution method 3x+5y=21 x=51-9y

asked by Sam on October 12, 2010
9. ## alg math 116

9x +3y=-51,-5x +y=39 solve using substitution method

asked by Juan on February 1, 2010
10. ## substitution

solve by the substitution method 3x+5y=21 x=51-9y

asked by Sam on October 12, 2010
11. ## algebra

how do you solve by substitution method: 2x+2y+2=-18+6y-8?

asked by Carolyn on April 3, 2010
12. ## math

how do I solve using the multiplacation method -2x>1/9

asked by Katie A on September 30, 2011
13. ## math

Solve using elimation method. -x + 4y = 0.5 -3x – 6y = 10.5

asked by measey on September 8, 2012
14. ## College Algebra

solve by the the substitution method 8x+9y=-39

asked by Tiffany on February 2, 2014
15. ## Math 116AA

Solve using the multiplication method 5/6x=-7/6 X=

asked by Katie A on September 29, 2011
16. ## college of the redwoods

x+9y=-42 3x+8y=-50 solve using the substitution method.

asked by paulette on November 9, 2015
17. ## Algebra

How would you solve this using substitution method y= 3 + x 2x + y = 8

asked by Donna on February 16, 2011
18. ## Algebra

Solve using the substitution method. 0.3x+0.2y=5,0.5x+0.4y=11

asked by sherry on March 22, 2012
19. ## math problem

solve by substitution method 7x+8y=44 x=41-5y

asked by Lavern on January 19, 2012
20. ## Math question

asked by DJ on January 20, 2012
21. ## math-need fast

solve by substitution method x^2=y^2+39 x-y=3

asked by anonymous on February 26, 2009
22. ## math

last one solve by the elim method 7r-3s=-7 3r+7s=59

asked by Help me again on July 21, 2010

Solve x^3 -3x^2 +5x +4 = 0 using Tartaglia's method.

asked by josh on October 25, 2009

solve using appropriate method. 3a-12b=9 4a-5b=3

asked by Anonymous on December 7, 2011
25. ## paste

solve by the substitution method 3x+5y=21 x=51-9y

asked by William Tolson on October 12, 2010
26. ## Algebra Help!!

solve using the substitution method. y= 5 - 3x 4x + y= 7

asked by slomo on January 11, 2015
27. ## Elimination Method...

Solve by eliminatin method. 2r-5s= -11 5r+2s= 16

asked by Joe on January 31, 2010
28. ## math

solve using add. method 4x=-6+5y 8x+4y=-3

asked by jason on July 18, 2011
29. ## algebra

solve by the subtraction method 5x+6y=0 x=34-8y

asked by bianca last one I promise on April 3, 2011
30. ## Algebra

solve using substitution method 3x-5y=61 3x-y=17

asked by Laura on January 25, 2011
31. ## math substitution method

use the substitution method to solve 7x+5y=-26 x=28-6y

asked by KiKi on March 28, 2010
32. ## Algebra 1

solve by the substitution method. 5x+9y=53 x=47-7y

asked by Anonymous on May 1, 2011
33. ## math

Solve using factorization method: x2+7x+10=0

asked by Y.Abdulsalam on December 5, 2017
34. ## math

solve xd^2y/dx^2+y=0 by frobenius method

asked by assma on April 17, 2015
35. ## differential equations

rk4 method with h 0.1 solve for y' = 4x-2y, y(0)= 2; y(0.5)

asked by Carol on August 3, 2016
36. ## college algerba

Solve by the substitution method:

asked by Sammy on March 30, 2008
37. ## Algebra

x-2y=.9 4x-3y=13.1 Solve using the substitution method.

asked by Jamie on February 1, 2013
38. ## college algerba

Solve by the substitution method: 2x - 3y = 7 y = 3x - 7

asked by Sammy on March 30, 2008
39. ## algebra

Solve using the substitution method 6x-3y=18, 6x+3y=-12

asked by sharday on February 23, 2012
40. ## math help quick please

solve {y=x-7 {5x+2y=7 Use the substitution method. A.(0, −7) B.(7, 0) C.(3, −4) D.(−1, −8)

asked by lily on February 6, 2017
41. ## math

Solve using the easiest method x^2-3x-10=0

asked by Jefferey on February 15, 2011
42. ## Algebra

4x+y=42 6x-5y=50 Solve using the substitution method.

asked by Jamie on February 1, 2013
43. ## ALGEBRA

SOLVE BY ALGEBRAIC METHOD Y=3X 1/3X + 1/2y =11

asked by BIBIN on March 21, 2012
44. ## Algebra

You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story

asked by Dina on January 15, 2015
45. ## Math

How do I show that the sum of 2 consecutive integers is always odd? I'm stuck on this question. Can you explain and show how to solve this? Thank you! :)

asked by Anonymous on September 18, 2016
46. ## Law inforcement operations & Report writing

Choose 1 area within the criminal justice system, such as law enforcement, corrections, or the courts. Identify and describe specifics issues raised in dealin with mentally ill individuals by the professionals in that aspect of the criminal justice system.

asked by nelson on May 22, 2007
47. ## programming

write a java application to calculate the exponent value of a number using the following specification

asked by Anonymous on April 20, 2012
48. ## Algebra 1--Please, help me!

Please, will someone check my answers and help me solve the other questions? 1. It takes Dustin 2 hours to shovel the snow from his driveway and sidewalk. It takes his sister 3 hours to shovel the same area. How long will it take them to shovel the walk if

asked by Victoria on June 3, 2014

use the intermediate value theorem to show that the polynomial function has a zero in the given interval. f(x)=4x^3+3x^2-8x+7;[-5,-2] please show all work

50. ## Math

Use the intermediate value theorem to show that f(x) has a zero in the given interval. Please show all of your work. f(x) = 3x^3 + 8x^2 - 5x - 11; [-2.8, -2.7] I'm not understanding all this questions...

asked by CheezyReezy on June 1, 2011
51. ## algebra

Could you show me how to do these math systems and show your work so i understand how to do them. 1) 3x+2y+4z=19 2x-y+z=3 6x+7y-z=17 2) 5x+8y+6z=14 2x+5y+z=12 -3x+6y-12z=20 3) x^2+2xy-2y^2=-11 x^2+xy-2y^2=-9

asked by hal on April 8, 2013
52. ## accounting

True/Falses 1. Period costs are not considered when costing products for inventory. 2. All direct labor costs during a period of time should be considered product costs and should be temporarily accumulated in the work in process inventory account. 3.

asked by john on February 15, 2008
53. ## Maths

3 inlet pipes A,B and C can be used to fill 1000m^3 water storage tank . When 3 pipes are in operation,the tank can be filled in 10hours .When only pipes A and B are used,the time increases to 20 hours. With pipe A and C, the tank can be filled in 12.5

asked by Rainie on July 26, 2015
54. ## Math

For problems 1 and 2, determine how many solutions there are for each triangle. You do not have to solve the triangle. 1. A = 29°, a = 13, c = 27 2. A = 100.1°, a = 20, b = 11 For problems 3-6, solve each triangle using the Law of Sines. If there is no

asked by Tabitha on January 13, 2011
55. ## History

1. How did Farming continue to be profitable for landowners even after the end of slavery? Landowners convinced former slaves to work for free Landowners used child labor Landowners took advantage of sharecroppers***** Landowners only allowed former slaves

asked by SwimmerGirl on January 24, 2018
56. ## science( chem)

Find the pH of a solution prepared by disolving 1.00g of glycine amide hydrochloride (BH+) (mwt=110.54g/mol) plus 1.00g of glycine amide (B)(mwt=74.08) in 0.10L PKa=8.04 I got pH= 8.21 Is that correct? This question actually has 4 extra parts but I wanted

asked by christina on July 21, 2007
57. ## college algebra

graph the function using transformations, show and state , a) the domain, B) range c) the asymptotes F(x)= 1/x^2-4 please show work!

asked by alli on August 17, 2012
58. ## algebra

Write the slope-intercept form of the equation of the line.Please show work. Show in graph.(-3,-5)(6,1)

asked by sherry on March 19, 2012
59. ## Math

3' x 4.5' quilt, 24 equal squares, i need to know the side length of one square, i need to show the equation to show my work.

asked by Ruben on February 6, 2017
60. ## College algebra

graph the function using transformations, show and state , a) the domain, B) range c) the asymptotes F(x)= 1 ----- -4 x^2 please show work!

asked by alli on August 18, 2012
61. ## math

1. Consider the function f(x) = x3 + 7x2 + 2x - 40 . a. Find the possible rational roots of f(x) = 0. b. Use synthetic division to divide f(x) by x - 2. Show all your work. Use your answer to explain whether or not x – 2 is a factor of f(x). c. Factor

62. ## Criminal Justice/Report Writing

When a violent crime is committed, the investigating officer will attempt to determine the suspect's method of operation. This should be recorded in which face sheet section? A. M.O., or modus operandi B. M.E., or method of entry C. Method of escape D.

asked by Pat on November 1, 2014
63. ## Algebra With Pizzazz

I missed a week of school and I know nothing. Next thing I know we get page 163 and have to do everything on it. I don't know anything it's on System of equations substitutinal method.

asked by Annie on February 9, 2017
64. ## Math

For functions f(x) = 7x − 8 and g(x) = 7x + 8, find ⓐ (f · g)(x) ⓑ (f · g)(−2). I have F(x)*G(x)= (7x-8)(7x+8). I never really understood how this equation works. I can see the FOIL method but I don't quite understand it in this system of

asked by Josh on March 25, 2019
65. ## MATH

you purchase 8 video game machines for a total of \$2722. A nintendo costs \$249 and an Xbox costs \$395. How many nintendos and how many xboxes did you buy? What 2 equations do I write and how do i solve it? (elimination substituation etc.)

asked by HAILS on June 7, 2011
66. ## AP Chemistry

(a) What is the pH of a 2.0 molar solution of acetic acid. Ka of acetic acid = 1.8 x 10¯5 (b) A buffer solution is prepared by adding 0.10 liter of 2.0 molar acetic acid solution to 0.1 liter of a 1.0 molar sodium hydroxide solution. Compute the hydrogen

asked by Dave on February 13, 2007
67. ## Chemistry

I am so overwhelmed. can somebody please help me? Consider a solution that is 0.022 M in Fe^2+ and 0.014 in Mg^2+ A) if K2CO3 is to selectively precipitate one of the cations while leaving the other cation in solution, which cation will precipitate first?

asked by Jennifer on April 1, 2013
68. ## MATH HELP

I posted this yesterday and no one bothered to check it, therefore Im posting it again, please check it this time. The south edmonton pet shop has several parrots and dogs for sale. There are a total of 24 heads and 82 legs in the display cages. A) Write a

asked by Anonymous on January 11, 2011
69. ## Math

1.Approximate sqrt3 by applying Newton's Method to the equation (x^2-3) = 0 2.The equation (x^3-x-2) = 0 has one real solution for 1

asked by Sandhya on June 21, 2011
70. ## Physics

A hockey puck travelling at 26 m/s [E 22* S] rebounds off the board at 21 m/s [E 22* N]. The puck is in contact with the board for 0.0025 seconds. Determine the average acceleration of the puck over the interval. average acceleration= change in

asked by Raj on January 25, 2007
71. ## statistics

A STAT 200 instructor is interested in whether there is any variation in the final exam grades between her two classes Data collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: (a) Determine the test statistic.

asked by chris on October 7, 2016
72. ## math

dave has a rabbit, a ferret,a gerbil and a turtle. He feeds them in a different order each day. In how many different orders can dave feed his pets. Make an organized list to solve each problem. Write each answer in a complete sentence show work please

asked by cam on September 10, 2012
73. ## chemistry

How many liters of hydrogen gas can be produced if 102 grams of methane gas (CH4) are combusted at 315 K and 1.2 atm? Show all of the work used to solve this problem. CH4 (g) + 2 O2 (g) CO2 (g) + 2 H2O(g)

asked by sarena on December 19, 2011
74. ## Chemistry :)

Balance the following redox equation and identify the element oxidized, the element reduced, the oxidizing agent, and the reducing agent. Show all of the work used to solve the problem. NO2- + Al AlO2- + NH3 Thanks :)

asked by Julia on June 19, 2011
75. ## Algebra 1

"Solve each system algebraically. Identify each system as cosistent and dependent, cosistent and independant, or inconsistant." my teacher didn't go over this in class and i have no idea what it means! here are the problems: #1) 2f+3g=11 f-g=(-7) #2)

asked by Mel on February 16, 2009
76. ## algebra

Solve the system by graphing. 3x+y=6 3x-y=0 I'm kind of unsure about how to do this. I'm thinking I just put any point in for x and then solve for y...is that right? you could let y=3x then substitute this value of y to the first equation...3x+3x=6 so,

asked by KC on August 18, 2007
77. ## Math

Use a system of equations to find the quadratic function f(x) = ax^2 + bx + c that satisfies the equations. Solve the system using matrices. f(−2) = 4, f(1) = −2, f(2) = −12

asked by anonymous on April 9, 2019
78. ## Maths

show that these curves y=2x^2+5x y=x^2+4x+12 y=3x^2+4x-6 have one point in common and find it coordinates?? is this done by simultaneous exuasion if so can you show me how because ive try and cant get it to work??

asked by Mars on October 12, 2010
79. ## Calculus

Use the intermediate value therom to show that there is a root of the given equation in the specified interval. x^5-7=2(25-x); (2,3) Please explain for understanding and show work, Thank you in advance :)

asked by Tori on February 8, 2013
80. ## Physics

In Figure 10-20, the magnitude of the force necessary to stretch a spring is plotted against the distance the spring is stretched. Figure 10-20 (a) Calculate the slope of the graph, k, and show that F = kd, where k = 25 N/m. (b) Find the amount of work

asked by Claire on October 25, 2011
81. ## Introduction to Algebra MAT 221

Factor each polynomial completely. Show all work. Show each step. x^4 - x^3.

asked by sandra on June 6, 2013
82. ## algebra 2

solve the triangle triangle BCD

asked by Tristan on May 5, 2010
83. ## Algebra 2(check pt 4)

1)Cramer's Rule is used to solve the system of equations:3m-5n=12,4m+7n=-5 Which determinant represents the numerator for n? answer=[12 -5] [-5 7] 2)Cramer's Rule is used to solve the system of equations:3x-y+2z=17,4x+2y-3z=10,and 2x+5y-9z=-6 Which

asked by erin on July 28, 2007
84. ## Chemistry

A 10.0-mL solution of 0.300 M NH3 is titrated with a 0.100 M HCl solution. Calculate the pH after the following additions of the HCl solution: a) 0.00 mL b) 10.0 mL c) 20.0 mL c) 30.0 mL d) 40.0 mL **I know how to solve the problem but I keep getting

asked by Sandhya on March 21, 2015
85. ## Physics

Heat of 30 kcal is supplied to a system and 4200j of external work is done on the system so that it's volume decreases at constant pressure.what is the change in its internal energy (J=4200 j/kcal)

asked by Shaik Tanaaz on August 18, 2016
86. ## Math-college

Explanation of why the following statement is incorrect. (x + 3)(x -4) < 7, and explain why it is incorrect. To solve (x + 3)(x -4) < 7, start by setting (x + 3) = 7 and (x - 4) = 7. Now solve the inequality. Provide a detailed explanation of why using

asked by Mike on July 24, 2017
87. ## Chemistry

The approximate concentration of a hydrochloric acid solution is 0.5M. The exact concentration of this solution is to be determined by the titration with 0.5M solution of sodium hydroxide. A 10.00 ml of HCl solution was transferred by pipet to an

asked by Ericka on May 17, 2015
88. ## information technology

Your sister owns a small clothing store. During a conversation at a family dinner, she mentions her frustration with having to manually track and reorder high demand items. She would like an automated system but has a very small budget. Write a 4-5 page

asked by titus on April 10, 2019
89. ## math

Describe two ways to determine whether or not a given point is a solution of a line. Which way is more accurate? Why? The only practical and fast way is to substitute the coordinates of the point into the equation. If the equation is "true", then it is a

asked by heather on July 30, 2007
90. ## chemistry

For a certain change, value of Delta U is -2.37 kJ. During the change, the system absorbs 650 joules. How much work did the system do? Please help! I get 3.02 but is not correct!!

asked by Mary on March 1, 2013
91. ## Math

A system of inequalities may have no solution, but is there a case where there might only be one solution?

asked by Emily on June 2, 2014
92. ## math

tell whether the system has one solution, infinitely many solutions, or no solution: y=3x-14 y-x=10

asked by Taylor on January 14, 2013
93. ## Algebra 1

Tell whether the system has one solution, infinitely many solutions, or no solution. 1.) y= 1/2x +3 2y -x =6 2.) x= -7y + 34 x+ 7y =32

asked by Lindsey on February 24, 2015
94. ## programming

3. Your company needs to depreciate its assets. The accountant wants to record the purchase price, the useful life, and the estimated salvage value. Your program should be able to depreciate by the straight-line method. For example, a computer system was

asked by tina on February 15, 2013
95. ## calculus

solve the logarithmic equation. be sure to reject any value of x that is not in the domain of the orginal logarithmic expression. In square root x+7=2 what is the exact solution? a.)the solution set is ? b.)there are infinitely many solutions c.)there is

asked by Brock on January 1, 2013
96. ## physics help!

When a gas follows path 123 on the PV diagram in a rectangle shape labeled 1234 cycle, 449 J of heat flows into the system and 179 J of work is done. What is the change in the internal energy of the system? * I keep coming up with 270 but this is

asked by emily on November 18, 2012
97. ## Chemistry, #7

The pH of a 1.00 x 10^-3 M solution of pyrrolidine is 10.82. Calculate Kb. I know pyrrolidine is acidic because of the pH, and I know that tells me something about the Ka which in turn tells me something about the Kb. What does it tell me? Where should I

asked by Taasha on August 5, 2007
98. ## Franklin High

4x - y = 2, 9x - 2y = 8 find solution by substitution method

asked by liz on June 12, 2013
99. ## math

solution :2y+3=y+1using balancing method

asked by David on May 8, 2019
100. ## Math

solving using the solution method. x+10y=41 x+9y=37 =

asked by Ms.Ellis on July 2, 2011